Organize notes in folders

[cdanger]

[Description]:

Currently, the organization of the notes is flat. Would be great to be able to organize them in folders like we do for bookmarks.

[Affected versions]:

4.0.0

[Prerequisites]:

Firefox 60.0.1 (64-bit) Windows 7

[Steps to reproduce]:

Create notes

[Expected result]:

Option to create a folder

[Actual result]:

No such option

[Additional Notes]:

Like Firefox bookmarks

[aemxn]

Referencing to my feature request to have a folder called "highlighted text" or something similar. When Add to Notes via context menu, the text will be saved in the specific folder and not to mess it with other folder/notes.